Program Listing for File macros.hpp
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// Copyright 2015 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef RMW__IMPL__CPP__MACROS_HPP_
#define RMW__IMPL__CPP__MACROS_HPP_
#include <iostream>
#include <sstream>
#include <string>
#include "rcutils/snprintf.h"
#include "rmw/allocators.h"
#include "rmw/error_handling.h"
#include "rmw/impl/config.h" // For RMW_AVOID_MEMORY_ALLOCATION
#include "rmw/impl/cpp/demangle.hpp" // For demangle.
#define RMW_TRY_PLACEMENT_NEW(Destination, BufferForNew, FailureAction, Type, ...) \
try { \
Destination = new(BufferForNew) Type(__VA_ARGS__); \
} catch (const std::exception & exception) { \
RMW_SET_ERROR_MSG( \
( \
std::string("caught C++ exception ") + rmw::impl::cpp::demangle(exception) + \
" constructing " #Type ": " + exception.what() \
).c_str()); \
FailureAction; \
} catch (...) { \
RMW_SET_ERROR_MSG("caught unknown C++ exception constructing " #Type); \
FailureAction; \
}
#define RMW_TRY_DESTRUCTOR(Statement, Type, FailureAction) \
try { \
Statement; \
} catch (const std::exception & exception) { \
RMW_SET_ERROR_MSG( \
( \
std::string("caught C++ exception in destructor of " #Type ": ") + \
rmw::impl::cpp::demangle(exception) + ": " + exception.what() \
).c_str()); \
FailureAction; \
} catch (...) { \
RMW_SET_ERROR_MSG("caught unknown C++ exception in destructor of " #Type); \
FailureAction; \
}
#define RMW_TRY_DESTRUCTOR_FROM_WITHIN_FAILURE(Statement, Type) \
try { \
Statement; \
} catch (const std::exception & exception) { \
std::stringstream ss; \
ss << "caught C++ exception in destructor of " #Type " while handling a failure: " \
<< rmw::impl::cpp::demangle(exception) << ": " << exception.what() \
<< ", at: " << __FILE__ << ":" << __LINE__ << '\n'; \
(std::cerr << ss.str()).flush(); \
} catch (...) { \
std::stringstream ss; \
ss << "caught unknown C++ exception in destructor of " #Type << \
" while handling a failure at: " << __FILE__ << ":" << __LINE__ << '\n'; \
(std::cerr << ss.str()).flush(); \
}
#if RMW_AVOID_MEMORY_ALLOCATION
#define RMW_CHECK_TYPE_IDENTIFIERS_MATCH(ElementName, ElementTypeID, ExpectedTypeID, OnFailure) \
{ \
if (ElementTypeID != ExpectedTypeID) { \
char __msg[1024]; \
int ret = rcutils_snprintf( \
__msg, sizeof(__msg), \
#ElementName " implementation '%s'(%p) does not match rmw implementation '%s'(%p)", \
ElementTypeID, reinterpret_cast<const void *>(ElementTypeID), \
ExpectedTypeID, reinterpret_cast<const void *>(ExpectedTypeID)); \
if (ret < 0) { \
static const char error_msg[] = \
"RMW_CHECK_TYPE_IDENTIFIERS_MATCH(): rcutils_snprintf() failed"; \
memmove(__msg, error_msg, sizeof(error_msg)); \
} \
RMW_SET_ERROR_MSG(__msg); \
OnFailure; \
} \
}
#else // RMW_AVOID_MEMORY_ALLOCATION
#define RMW_CHECK_TYPE_IDENTIFIERS_MATCH(ElementName, ElementTypeID, ExpectedTypeID, OnFailure) \
{ \
if (ElementTypeID != ExpectedTypeID) { \
int __bytes_that_would_have_been_written = rcutils_snprintf( \
NULL, 0, \
#ElementName " implementation '%s'(%p) does not match rmw implementation '%s'(%p)", \
ElementTypeID, reinterpret_cast<const void *>(ElementTypeID), \
ExpectedTypeID, reinterpret_cast<const void *>(ExpectedTypeID)); \
if (__bytes_that_would_have_been_written < 0) { \
RMW_SET_ERROR_MSG( \
"RMW_CHECK_TYPE_IDENTIFIERS_MATCH(): rcutils_snprintf(NULL, 0, ...) failed"); \
OnFailure; \
} else { \
char * __msg = \
reinterpret_cast<char *>(rmw_allocate(__bytes_that_would_have_been_written + 1)); \
if (NULL == __msg) { \
RMW_SET_ERROR_MSG( \
"RMW_CHECK_TYPE_IDENTIFIERS_MATCH(): rmw_allocate() failed"); \
} else { \
int ret = rcutils_snprintf( \
__msg, __bytes_that_would_have_been_written + 1, \
#ElementName " implementation '%s'(%p) does not match rmw implementation '%s'(%p)", \
ElementTypeID, reinterpret_cast<const void *>(ElementTypeID), \
ExpectedTypeID, reinterpret_cast<const void *>(ExpectedTypeID)); \
if (ret < 0) { \
RMW_SET_ERROR_MSG( \
"RMW_CHECK_TYPE_IDENTIFIERS_MATCH(): rcutils_snprintf() failed"); \
} else { \
RMW_SET_ERROR_MSG(__msg); \
} \
} \
rmw_free(__msg); \
OnFailure; \
} \
} \
}
#endif // RMW_AVOID_MEMORY_ALLOCATION
#endif // RMW__IMPL__CPP__MACROS_HPP_